Bender, Carl M. , <br/><br/>
Advanced mathematical methods for scientists and engineers I : asymptotics methods and perturbation theory 

 - New Delhi  Springer  1999. 
 - xiv, 593 p.:  ill.;  21cm. 
 - International series in pure and applied mathematics. .
<br/><br/> Originally published: New York, 1978.  
<br/><br/><label>ISBN: </label>9788181289063 
<br/><br/><label>Dewey Class. No.: </label>515.35 BEN